Grain-drier.



L, L. (mss. GRAIN DRIEB. APPLIATIQN FILED FEB. 4.1908.

Patented June 1,1909.

FIOR

LORIN L. OASS, OF WESTON, OHIO.

GRAIN-BRIEF.

Specification of Letters Patent.

Patented June l, 1909.

- `rzvpplcation filed February 4, 1908. Serial No. 414,186.

. To clt'whjom alt-may concern:

Be it known thatI, LORIN L. Criss, citizen of the United States, residing at Weston, in

the countyof Wood and State of Ohio, have invented certain new and useful Improvements in Grain-Driers; and I do hereby declare the 'following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which yit appertains ,to make and use the same.

rIhis invention relates to apparatus for drying and `cooling ,grain and 1t embodies Athe, novel yconstruction and arrangement whereby the `grain ies-,initially heated and dried, after which it is cooled and the heat contained therein is transferred to the air to be yagain employed in drying, the object of the invention beingto provide a simple apparatus capable of being operated with a maximum of economy and efliciency.

Tothis end the invention embodies two separatedchambers, one ya drying chamber and theother a cooling chamber, each provided with-double perforated or foraminous walls which' provide continuous passages for the grain, with means for drawing the air from one chamber and yfor discharging it into the other chamber, land means for heating the'air.

is an elevation showing' the complete-appa- Referring to the drawings, 1 is the drier' proper' consisting of two superposed chambers 2 and 8, separated from direct connection with each other by a horizontal partition 4, the chamber 2 .being the heating and drying chamber and 3 the cooling chamber. i

At thesides of the chambers 2 and 3 are double walls 5 of perforated or foraminous material and these walls are spaced apart and are successively inclined to provide passages through which the grain has a gradually descending movement in two divided columns from the receiving hopper 6 at the top of the drier to a trough 7 at the bottom, the grain being removed from the trough by any.suitablelmeans preferably a screw oonveyer 'S discharging at 9.

10 is a heater through which air is drawn by a blower or fan 11 connected therewith by a flue 12 `having a regulating slide 13 to control ther passage yof heated air therethrough, and? 14 is aflue through which In 'the accompanying drawings, Figure 1 r heated air is discharged from the fan into the drying chamber 2.

15 is a iiue connecting the coolingchamber 3 with the hot air flue 12, the point of connection being between the fan and the regulating valve 13.

In operation, the fan being connected with suitable power and the heater being `fired up preferably with anthracite coal, the

grain to be dried is deposited into the hopper 6 from which it descends in two columns between the spacedv perforated walls of the drying and thecooling chambers to the trough 7, the passage of the grain being continuous and the speed with which it descends depending upon the discharge at S). The air from the heater being drawn directly through the burning coal will be highly heated and will follow the course indicated by the arrows, being discharged into the heating chamber and passing outward through the perforated walls thereof and through the grain, as indicated by the arrows, the grain being consequently dried. As the grain Ais constantly descending between the double perforated walls, when it arrives ata point opposite the partition fl and thereafter as it descends below this point, the cold outer air will pass in an inward direction through the grain, as indicated by the arrows, Fig. 2. The grain will be consequently cooled and the air passing therethrough will take up the heat which it contained and pass through the flue 15 and into the fan. The grain is thus rapidly cooled and the heat again utilized.

To regulate the quantity of heated air taken from the heater the slide 13 is provided in the flue leading from the heater to the fan, and it will be seen that by regulating this slide the volume of heated air may be controlled. By slightly closing the slide, less heat will pass from the heater to the fan and a greater' volume of air will be drawn through the grain between the double walls of the cooling chamber; and if the slide is opened, a greater volume of heated air will pass to the fan from the heater and the volume of air from the cooling chamber will be less.

F rom the foregoing it will be observed that the air is drawn through and discharged through a single column only of grain and since the heat absorbed by the grain is again transferred to the air employed in drying the grain, a minimum of both heat and mechanical energy will be required to operate the apparatus. Furthermore the operation ot' the apparatus is continuous, so that large quantities ot' grain may be dried and cooled at a Very tritiing expenditure for labor.

Having described my invention, what I claim and desire to secure by Letters Patent, is-

In an apparatus for cooling and drying grain, a drier having a hopper at the top, a trough at the bot-toni, and spaced perforated side walls providing connecting passages between the hopper and the trough7 the spaced Walls inclosing superposed chainA bers, the upper chamber a heating chamber and the lower a cooling chamber separated from direct connection With each other, a

heater, a divided connection leading from the heater and the cooling chamber respectively lo the intake of a tan, a. fan, and a discharge connection from the fan to the heating chamber, substantially as described.

in testimony whereof7 I hereunto ax my signature, in presence of two witnesses.

LORIN L.l CASS.

lllitnesses t J. J. CRANDALL, CARL H. KELLER. 

